diff --git a/tools/testing/selftests/cachestat/.gitignore b/tools/testing/selftests/cachestat/.gitignore
index d6c30b43a4bb..abbb13b6e96b 100644
--- a/tools/testing/selftests/cachestat/.gitignore
+++ b/tools/testing/selftests/cachestat/.gitignore
@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 test_cachestat
+tmpshmcstat
diff --git a/tools/testing/selftests/cachestat/test_cachestat.c b/tools/testing/selftests/cachestat/test_cachestat.c
index c952640f163b..ab838bcb9ec5 100644
--- a/tools/testing/selftests/cachestat/test_cachestat.c
+++ b/tools/testing/selftests/cachestat/test_cachestat.c
@@ -226,7 +226,7 @@ bool run_cachestat_test(enum file_type type)
 	int syscall_ret;
 	size_t compute_len = PS * 512;
 	struct cachestat_range cs_range = { PS, compute_len };
-	char *filename = "tmpshmcstat";
+	char *filename = "tmpshmcstat", *map;
 	struct cachestat cs;
 	bool ret = true;
 	int fd;
@@ -257,7 +257,7 @@ bool run_cachestat_test(enum file_type type)
 		}
 		break;
 	case FILE_MMAP:
-		char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE,
+		map = mmap(NULL, filesize, PROT_READ | PROT_WRITE,
 				 MAP_SHARED, fd, 0);
 
 		if (map == MAP_FAILED) {